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vlan: introduce functions to do mass addition/deletion of vids by another device 

Introduce functions handy to copy vlan ids from one driver's list to
another.

Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jiri Pirko 2011-12-08 04:11:19 +00:00 committed by David S. Miller
parent 5b9ea6e022
commit 348a1443cc
2 changed files with 59 additions and 0 deletions
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15
include/linux/if_vlan.h
View File

@ -97,6 +97,10 @@ extern struct sk_buff *vlan_untag(struct sk_buff *skb);
extern int vlan_vid_add(struct net_device *dev, unsigned short vid);
extern void vlan_vid_del(struct net_device *dev, unsigned short vid);
extern int vlan_vids_add_by_dev(struct net_device *dev,
const struct net_device *by_dev);
extern void vlan_vids_del_by_dev(struct net_device *dev,
const struct net_device *by_dev);
#else
static inline struct net_device *
__vlan_find_dev_deep(struct net_device *real_dev, u16 vlan_id)
@ -136,6 +140,17 @@ static inline int vlan_vid_add(struct net_device *dev, unsigned short vid)
static inline void vlan_vid_del(struct net_device *dev, unsigned short vid)
{
}
static inline int vlan_vids_add_by_dev(struct net_device *dev,
const struct net_device *by_dev)
{
return 0;
}
static inline void vlan_vids_del_by_dev(struct net_device *dev,
const struct net_device *by_dev)
{
}
#endif
/**

44
net/8021q/vlan_core.c
View File

@ -321,3 +321,47 @@ void vlan_vid_del(struct net_device *dev, unsigned short vid)
}
}
EXPORT_SYMBOL(vlan_vid_del);
int vlan_vids_add_by_dev(struct net_device *dev,
const struct net_device *by_dev)
{
struct vlan_vid_info *vid_info;
int err;
ASSERT_RTNL();
if (!by_dev->vlan_info)
return 0;
list_for_each_entry(vid_info, &by_dev->vlan_info->vid_list, list) {
err = vlan_vid_add(dev, vid_info->vid);
if (err)
goto unwind;
}
return 0;
unwind:
list_for_each_entry_continue_reverse(vid_info,
&by_dev->vlan_info->vid_list,
list) {
vlan_vid_del(dev, vid_info->vid);
}
return err;
}
EXPORT_SYMBOL(vlan_vids_add_by_dev);
void vlan_vids_del_by_dev(struct net_device *dev,
const struct net_device *by_dev)
{
struct vlan_vid_info *vid_info;
ASSERT_RTNL();
if (!by_dev->vlan_info)
return;
list_for_each_entry(vid_info, &by_dev->vlan_info->vid_list, list)
vlan_vid_del(dev, vid_info->vid);
}
EXPORT_SYMBOL(vlan_vids_del_by_dev);